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Average concentration of amino acids entering the colon available in free form

Value	100 μM
Organism	Human Homo sapiens
Reference	Michael A. Savageau, 1983, Escherichia coli Habitats, Cell Types, and Molecular Mechanisms of Gene Control, The American Naturalist, Vol. 122, No. 6, (Dec., 1983), pp. 735
Primary Source	Nixon SE, Mawer GE. The digestion and absorption of protein in man. 1. The site of absorption. Br J Nutr. 1970 Mar24(1):227-40.PubMed ID5424259
Method	1. A randomly labelled 14C protein was synthesized in order to investigate the site and rate of digestion and absorption of dietary protein in the rat. 2. A liquid test meal consisting of protein and a non-absorbable marker, 51CrCl3, was administered to rats which were then sacrificed at intervals up to 4 hr after ingestion of the meal.
Entered by	Uri M
ID	102118